You will play as the goblin infused strength focused Orc, the technologically advanced economical Human, the hyper-aggressive soul thirsty Lost, or the adaptive magic crazed Naga.
Included are highly customized tech trees for each race, new heroes, units, abilities, spells, upgrades, integrated sea units, specialized terrain, and support features.

Human:
-Retribution Wagon base damage increased from 6 to 16
-Phoenix health lowered from 1250 to 850, decay rate reduced from -25 to -15
-Argonaut gold cost reduced from 300 to 250
-Battleship gold cost reduced from 460 to 350
-Gryphon Rider gold cost reduced from 580 to 520
-Improved Masonry has 3 levels again
-Barracks, Lumber Mill, and Blacksmith now have Reclaim. Reclaim is now a research

Lost:
-Ravager gold cost reduced from 590 to 450
-Unbridled Frenzy renamed to Frenzy and is now a passive that increases attack damage every attack as long as an enemy unit is within attack range
-Terror checks for research
-Dark Retreate is now Dark Fold, found on the Ravager
-Incursus removed, I found it had no real purpose as it was orignally the medium naval unit as sort of morphed into a semi-useful air unit. Four air units is too many.
-Stygian Monarch gains Phase
-Abyss now requires Parapet